ear infection

Has anyone ever used this, and if so, was it any good? I recently adopted a 2 year old retriever with recurrent ear infections. Previous owner thought it was food allergies but they tested it by sending a hair sample to a private company and from what I can tell from looking into that testing...

Hi everyone, hoping you can help me out as I feel like I’m bugging the vets to no end lol. Have rung 4/5 times and visited twice with Pippin and once with Stan in past 48 hours... Pippin seems to have a severe infection in her right ear. She had the same kind of problem - although not to this...